Add gfx::GpuMemoryBuffer::YUV_420 and GpuMemoryBufferImplSharedMemory support

ui/gl/gl_image_memory.cc

Index: ui/gl/gl_image_memory.cc
diff --git a/ui/gl/gl_image_memory.cc b/ui/gl/gl_image_memory.cc
index 902291759eb066ca741833e50f304c435582e1ee..ff9c97ee297255c476c2a31c607057bfe6d7051a 100644
--- a/ui/gl/gl_image_memory.cc
+++ b/ui/gl/gl_image_memory.cc
@@ -38,6 +38,7 @@ bool ValidFormat(gfx::GpuMemoryBuffer::Format format) {
     case gfx::GpuMemoryBuffer::BGRA_8888:
       return true;
     case gfx::GpuMemoryBuffer::RGBX_8888:
+    case gfx::GpuMemoryBuffer::YUV_420:
       return false;
   }
 
@@ -52,6 +53,7 @@ bool IsCompressedFormat(gfx::GpuMemoryBuffer::Format format) {
     case gfx::GpuMemoryBuffer::DXT1:
     case gfx::GpuMemoryBuffer::DXT5:
     case gfx::GpuMemoryBuffer::ETC1:
+    case gfx::GpuMemoryBuffer::YUV_420:
       return true;
     case gfx::GpuMemoryBuffer::RGBA_8888:
     case gfx::GpuMemoryBuffer::BGRA_8888:
@@ -80,6 +82,7 @@ GLenum TextureFormat(gfx::GpuMemoryBuffer::Format format) {
     case gfx::GpuMemoryBuffer::BGRA_8888:
       return GL_BGRA_EXT;
     case gfx::GpuMemoryBuffer::RGBX_8888:
+    case gfx::GpuMemoryBuffer::YUV_420:
       NOTREACHED();
       return 0;
   }
@@ -103,6 +106,7 @@ GLenum DataType(gfx::GpuMemoryBuffer::Format format) {
     case gfx::GpuMemoryBuffer::DXT5:
     case gfx::GpuMemoryBuffer::ETC1:
     case gfx::GpuMemoryBuffer::RGBX_8888:
+    case gfx::GpuMemoryBuffer::YUV_420:
       NOTREACHED();
       return 0;
   }
@@ -153,10 +157,6 @@ bool GLImageMemory::StrideInBytes(size_t width,
                                   size_t* stride_in_bytes) {
   base::CheckedNumeric<size_t> s = width;
   switch (format) {
-    case gfx::GpuMemoryBuffer::ATCIA:
-    case gfx::GpuMemoryBuffer::DXT5:
-      *stride_in_bytes = width;
-      return true;
     case gfx::GpuMemoryBuffer::ATC:
     case gfx::GpuMemoryBuffer::DXT1:
     case gfx::GpuMemoryBuffer::ETC1:
@@ -164,18 +164,21 @@ bool GLImageMemory::StrideInBytes(size_t width,
       s /= 2;
       if (!s.IsValid())
         return false;
-
       *stride_in_bytes = s.ValueOrDie();
       return true;
+    case gfx::GpuMemoryBuffer::ATCIA:
+    case gfx::GpuMemoryBuffer::DXT5:
+      *stride_in_bytes = width;
+      return true;
     case gfx::GpuMemoryBuffer::RGBA_8888:
     case gfx::GpuMemoryBuffer::BGRA_8888:
       s *= 4;
       if (!s.IsValid())
         return false;
-
       *stride_in_bytes = s.ValueOrDie();
       return true;
     case gfx::GpuMemoryBuffer::RGBX_8888:
+    case gfx::GpuMemoryBuffer::YUV_420:
       NOTREACHED();
       return false;
   }