UserAgent: Mozilla/5.0 (Windows NT 10.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/56.0.2924.87 Safari/537.36

Example URL:
https://chrome.google.com/webstore/detail/grammarly-for-chrome/kbfnbcaeplbcioakkpcpgfkobkghlhen?hl=en

Steps to reproduce the problem:
1. Just open the URL (although any extension URL will work)
2. Visit the first slide (hover over the first dot), it's supposed to be the promo video

What is the expected behavior?
Promo video loads. You click the play button and it plays.

What went wrong?
Black slide. No video loads.

Did this work before? Yes At least two months back. (How am I supposed to recall versions :/)

Is it a problem with Flash or HTML5? N/A

Does this work in other browsers? Yes, in Firefox 51 stable.

Chrome version: 56.0.2924.87  Channel: stable
OS Version: 10.0
Flash Version: 

Contents of chrome://gpu: 
Graphics Feature Status
Canvas: Hardware accelerated
Flash: Hardware accelerated
Flash Stage3D: Hardware accelerated
Flash Stage3D Baseline profile: Hardware accelerated
Compositing: Hardware accelerated
Multiple Raster Threads: Enabled
Native GpuMemoryBuffers: Software only. Hardware acceleration disabled
Rasterization: Software only, hardware acceleration unavailable
Video Decode: Hardware accelerated
Video Encode: Hardware accelerated
VPx Video Decode: Software only, hardware acceleration unavailable
WebGL: Hardware accelerated
WebGL2: Hardware accelerated
Driver Bug Workarounds
clear_uniforms_before_first_program_use
disable_discard_framebuffer
disable_framebuffer_cmaa
exit_on_context_lost
force_cube_complete
msaa_is_slow
scalarize_vec_and_mat_constructor_args
texsubimage_faster_than_teximage
Problems Detected
GPU rasterization should only be enabled on NVIDIA Pascal and Maxwell, Intel Broadwell+, and AMD RX-R5 GPUs for now.: 643850
Disabled Features: gpu_rasterization
Accelerated VPx decoding is hanging on some videos.: 654111
Disabled Features: accelerated_vpx_decode
Some drivers are unable to reset the D3D device in the GPU process sandbox
Applied Workarounds: exit_on_context_lost
TexSubImage is faster for full uploads on ANGLE
Applied Workarounds: texsubimage_faster_than_teximage
Clear uniforms before first program use on all platforms: 124764, 349137
Applied Workarounds: clear_uniforms_before_first_program_use
Always rewrite vec/mat constructors to be consistent: 398694
Applied Workarounds: scalarize_vec_and_mat_constructor_args
ANGLE crash on glReadPixels from incomplete cube map texture: 518889
Applied Workarounds: force_cube_complete
On Intel GPUs MSAA performance is not acceptable for GPU rasterization: 527565
Applied Workarounds: msaa_is_slow
Framebuffer discarding can hurt performance on non-tilers: 570897
Applied Workarounds: disable_discard_framebuffer
Limited enabling of Chromium GL_INTEL_framebuffer_CMAA: 535198
Applied Workarounds: disable_framebuffer_cmaa
Native GpuMemoryBuffers have been disabled, either via about:flags or command line.
Disabled Features: native_gpu_memory_buffers
Version Information
Data exported	06/03/2017, 18:47:36
Chrome version	Chrome/56.0.2924.87
Operating system	Windows NT 10.0.14393
Software rendering list version	12.06
Driver bug list version	9.24
ANGLE commit id	a4aaa2de57dc
2D graphics backend	Skia/56 bf2d9e02d58ea01f1c239f7e2fc024cba140ccb1
Command Line Args	--profile-directory="Profile 2" --flag-switches-begin --enable-devtools-experiments --javascript-harmony --enable-experimental-extension-apis --flag-switches-end
Driver Information
Initialization time	417
In-process GPU	false
Sandboxed	false
GPU0	VENDOR = 0x8086, DEVICE= 0x0102
Optimus	false
AMD switchable	false
Desktop compositing	Aero Glass
Diagonal Monitor Size of \\.\DISPLAY1	18.5"
Driver vendor	Intel Corporation
Driver version	9.17.10.4229
Driver date	5-27-2015
Pixel shader version	4.1
Vertex shader version	4.1
Max. MSAA samples	4
Machine model name	
Machine model version	
GL_VENDOR	Google Inc.
GL_RENDERER	ANGLE (Intel(R) HD Graphics Direct3D11 vs_4_1 ps_4_1)
GL_VERSION	OpenGL ES 3.0 (ANGLE 2.1.0.a4aaa2de57dc)
GL_EXTENSIONS	GL_ANGLE_depth_texture GL_ANGLE_framebuffer_blit GL_ANGLE_framebuffer_multisample GL_ANGLE_instanced_arrays GL_ANGLE_lossy_etc_decode GL_ANGLE_pack_reverse_row_order GL_ANGLE_robust_client_memory GL_ANGLE_texture_compression_dxt3 GL_ANGLE_texture_compression_dxt5 GL_ANGLE_texture_usage GL_ANGLE_translated_shader_source GL_CHROMIUM_bind_generates_resource GL_CHROMIUM_bind_uniform_location GL_CHROMIUM_copy_compressed_texture GL_CHROMIUM_copy_texture GL_CHROMIUM_sync_query GL_EXT_blend_minmax GL_EXT_color_buffer_float GL_EXT_color_buffer_half_float GL_EXT_debug_marker GL_EXT_discard_framebuffer GL_EXT_disjoint_timer_query GL_EXT_draw_buffers GL_EXT_frag_depth GL_EXT_map_buffer_range GL_EXT_occlusion_query_boolean GL_EXT_read_format_bgra GL_EXT_robustness GL_EXT_sRGB GL_EXT_shader_texture_lod GL_EXT_texture_compression_dxt1 GL_EXT_texture_filter_anisotropic GL_EXT_texture_format_BGRA8888 GL_EXT_texture_norm16 GL_EXT_texture_rg GL_EXT_texture_storage GL_EXT_unpack_subimage GL_KHR_debug GL_NV_EGL_stream_consumer_external GL_NV_fence GL_NV_pack_subimage GL_NV_pixel_buffer_object GL_OES_EGL_image GL_OES_EGL_image_external GL_OES_EGL_image_external_essl3 GL_OES_compressed_ETC1_RGB8_texture GL_OES_depth32 GL_OES_element_index_uint GL_OES_get_program_binary GL_OES_mapbuffer GL_OES_packed_depth_stencil GL_OES_rgb8_rgba8 GL_OES_standard_derivatives GL_OES_texture_float GL_OES_texture_float_linear GL_OES_texture_half_float GL_OES_texture_half_float_linear GL_OES_texture_npot GL_OES_vertex_array_object
Disabled Extensions	
Window system binding vendor	Google Inc. (adapter LUID: 0000000000008105)
Window system binding version	1.4 (ANGLE 2.1.0.a4aaa2de57dc)
Window system binding extensions	EGL_EXT_create_context_robustness EGL_ANGLE_d3d_share_handle_client_buffer EGL_ANGLE_d3d_texture_client_buffer EGL_ANGLE_surface_d3d_texture_2d_share_handle EGL_ANGLE_query_surface_pointer EGL_ANGLE_window_fixed_size EGL_ANGLE_keyed_mutex EGL_ANGLE_surface_orientation EGL_ANGLE_direct_composition EGL_NV_post_sub_buffer EGL_KHR_create_context EGL_EXT_device_query EGL_KHR_image EGL_KHR_image_base EGL_KHR_gl_texture_2D_image EGL_KHR_gl_texture_cubemap_image EGL_KHR_gl_renderbuffer_image EGL_KHR_get_all_proc_addresses EGL_KHR_stream EGL_KHR_stream_consumer_gltexture EGL_NV_stream_consumer_gltexture_yuv EGL_ANGLE_flexible_surface_compatibility EGL_ANGLE_stream_producer_d3d_texture_nv12 EGL_ANGLE_create_context_webgl_compatibility EGL_CHROMIUM_create_context_bind_generates_resource
Direct rendering	Yes
Reset notification strategy	0x8252
GPU process crash count	0
Compositor Information
Tile Update Mode	One-copy
Partial Raster	Enabled
GpuMemoryBuffers Status
ATC	Software only
ATCIA	Software only
DXT1	Software only
DXT5	Software only
ETC1	Software only
R_8	Software only
RG_88	Software only
BGR_565	Software only
RGBA_4444	Software only
RGBX_8888	Software only
RGBA_8888	Software only
BGRX_8888	Software only
BGRA_8888	Software only
YVU_420	Software only
YUV_420_BIPLANAR	Software only
UYVY_422	Software only
Diagnostics
... loading ...
Log Messages
[4804:8912:0306/152841.085:ERROR:gles2_cmd_decoder.cc(16945)] : [.DisplayCompositor-095A5180]GL ERROR :GL_INVALID_OPERATION : glCreateAndConsumeTextureCHROMIUM: invalid mailbox name
[4804:8912:0306/152841.085:ERROR:gles2_cmd_decoder.cc(16945)] : [.DisplayCompositor-095A5180]GL ERROR :GL_INVALID_OPERATION : glCreateAndConsumeTextureCHROMIUM: invalid mailbox name
[4804:8912:0306/152841.085:ERROR:gles2_cmd_decoder.cc(16945)] : [.DisplayCompositor-095A5180]GL ERROR :GL_INVALID_OPERATION : glCreateAndConsumeTextureCHROMIUM: invalid mailbox name
[4804:8912:0306/152841.085:ERROR:gles2_cmd_decoder.cc(9408)] : [.DisplayCompositor-095A5180]RENDER WARNING: texture bound to texture unit 1 is not renderable. It maybe non-power-of-2 and have incompatible texture filtering.
[4804:8912:0306/152841.086:ERROR:gles2_cmd_decoder.cc(9408)] : [.DisplayCompositor-095A5180]RENDER WARNING: texture bound to texture unit 2 is not renderable. It maybe non-power-of-2 and have incompatible texture filtering.
[4804:8912:0306/152841.086:ERROR:gles2_cmd_decoder.cc(9408)] : [.DisplayCompositor-095A5180]RENDER WARNING: texture bound to texture unit 3 is not renderable. It maybe non-power-of-2 and have incompatible texture filtering.
[4804:8912:0306/180548.003:ERROR:gles2_cmd_decoder.cc(16945)] : [.DisplayCompositor-095A5180]GL ERROR :GL_INVALID_OPERATION : glCreateAndConsumeTextureCHROMIUM: invalid mailbox name
[4804:8912:0306/180548.036:ERROR:gles2_cmd_decoder.cc(9408)] : [.DisplayCompositor-095A5180]RENDER WARNING: texture bound to texture unit 0 is not renderable. It maybe non-power-of-2 and have incompatible texture filtering.

Ignore the "specific URL". The issue appears for ANY EXTENSION on the store which has a video. I checked this issue on a clean slate of Chrome profile with default settings, along with incognito mode. I also checked with my friend. He has the same issue.