media: replace LUMINANCE_F16 by RG_88 for 9/10-bit h264 videos

cc/resources/resource_format.cc

Index: cc/resources/resource_format.cc
diff --git a/cc/resources/resource_format.cc b/cc/resources/resource_format.cc
index 2d139ab5c0465e910b289844893c6acb63a3653f..1461e23908707ba0b544946615e1533948fe6152 100644
--- a/cc/resources/resource_format.cc
+++ b/cc/resources/resource_format.cc
@@ -17,6 +17,7 @@ int BitsPerPixel(ResourceFormat format) {
       return 32;
     case RGBA_4444:
     case RGB_565:
+    case RG_88:
     case LUMINANCE_F16:
       return 16;
     case ALPHA_8:
@@ -41,6 +42,7 @@ GLenum GLDataType(ResourceFormat format) {
       GL_UNSIGNED_SHORT_5_6_5,    // RGB_565,
       GL_UNSIGNED_BYTE,           // ETC1
       GL_UNSIGNED_BYTE,           // RED_8
+      GL_UNSIGNED_BYTE,           // RG_88
       GL_HALF_FLOAT_OES,          // LUMINANCE_F16
   };
   static_assert(arraysize(format_gl_data_type) == (RESOURCE_FORMAT_MAX + 1),
@@ -60,6 +62,7 @@ GLenum GLDataFormat(ResourceFormat format) {
       GL_RGB,            // RGB_565
       GL_ETC1_RGB8_OES,  // ETC1
       GL_RED_EXT,        // RED_8
+      GL_RG_EXT,         // RG_88
       GL_LUMINANCE,      // LUMINANCE_F16
   };
   static_assert(arraysize(format_gl_data_format) == (RESOURCE_FORMAT_MAX + 1),
@@ -70,7 +73,23 @@ GLenum GLDataFormat(ResourceFormat format) {
 GLenum GLInternalFormat(ResourceFormat format) {
   // In GLES2, the internal format must match the texture format. (It no longer
   // is true in GLES3, however it still holds for the BGRA extension.)
-  return GLDataFormat(format);
+  DCHECK_LE(format, RESOURCE_FORMAT_MAX);
+  static const GLenum internal_format_gl_data_format[] = {
+      GL_RGBA,           // RGBA_8888
+      GL_RGBA,           // RGBA_4444
+      GL_BGRA_EXT,       // BGRA_8888
+      GL_ALPHA,          // ALPHA_8
+      GL_LUMINANCE,      // LUMINANCE_8
+      GL_RGB,            // RGB_565
+      GL_ETC1_RGB8_OES,  // ETC1
+      GL_R8_EXT,         // RED_8
+      GL_RG8_EXT,        // RG_88
+      GL_LUMINANCE,      // LUMINANCE_F16
+  };
+  static_assert(
+      arraysize(internal_format_gl_data_format) == (RESOURCE_FORMAT_MAX + 1),
+      "internal_format_gl_data_format does not handle all cases.");
+  return internal_format_gl_data_format[format];
 }
 
 GLenum GLCopyTextureInternalFormat(ResourceFormat format) {
@@ -89,7 +108,8 @@ GLenum GLCopyTextureInternalFormat(ResourceFormat format) {
       GL_LUMINANCE,  // LUMINANCE_8
       GL_RGB,        // RGB_565
       GL_RGB,        // ETC1
-      GL_LUMINANCE,  // RED_8
+      GL_R8_EXT,     // RED_8
+      GL_RG8_EXT,    // RG_88:
       GL_LUMINANCE,  // LUMINANCE_F16
   };
   static_assert(arraysize(format_gl_data_format) == (RESOURCE_FORMAT_MAX + 1),
@@ -103,6 +123,8 @@ gfx::BufferFormat BufferFormat(ResourceFormat format) {
       return gfx::BufferFormat::BGRA_8888;
     case RED_8:
       return gfx::BufferFormat::R_8;
+    case RG_88:
+      return gfx::BufferFormat::RG_88;
     case RGBA_4444:
       return gfx::BufferFormat::RGBA_4444;
     case RGBA_8888:
@@ -134,6 +156,7 @@ bool DoesResourceFormatSupportAlpha(ResourceFormat format) {
     case RGB_565:
     case ETC1:
     case RED_8:
+    case RG_88:
     case LUMINANCE_F16:
       return false;
   }