[Fuchsia] Reduce Skia's ResourceCacheLimit

This CL reduces Skia resource usage to address memory issues
explained on fxb/36620.

Test: Tested cast_runner on device.
Bug: 982922, fuchsia:36620
Change-Id: I7af5c5a252c10110abe7b783527b48e933a86807
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1851127
Commit-Queue: Emircan Uysaler <emircan@chromium.org>
Reviewed-by: Peng Huang <penghuang@chromium.org>
Reviewed-by: Sergey Ulanov <sergeyu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#704632}

gpu/command_buffer/common/skia_utils.cc

@@ -134,7 +134,12 @@ void DetermineGrCacheLimitsFromAvailableMemory(
     size_t* max_resource_cache_bytes,
     size_t* max_glyph_cache_texture_bytes) {
   // Default limits.
+#if defined(OS_FUCHSIA)
+  // Reduce protected budget on fuchsia due to https://fxb/36620.
+  constexpr size_t kMaxGaneshResourceCacheBytes = 24 * 1024 * 1024;
+#else
   constexpr size_t kMaxGaneshResourceCacheBytes = 96 * 1024 * 1024;
+#endif  // defined(OS_FUCHSIA)
   constexpr size_t kMaxDefaultGlyphCacheTextureBytes = 2048 * 1024 * 4;
 
   *max_resource_cache_bytes = kMaxGaneshResourceCacheBytes;
@@ -144,7 +149,12 @@ void DetermineGrCacheLimitsFromAvailableMemory(
 #if !defined(OS_NACL)
   // The limit of the bytes allocated toward GPU resources in the GrContext's
   // GPU cache.
+#if defined(OS_FUCHSIA)
+  // Reduce protected budget on fuchsia due to https://fxb/36620.
+  constexpr size_t kMaxLowEndGaneshResourceCacheBytes = 24 * 1024 * 1024;
+#else
   constexpr size_t kMaxLowEndGaneshResourceCacheBytes = 48 * 1024 * 1024;
+#endif  // defined(OS_FUCHSIA)
   constexpr size_t kMaxHighEndGaneshResourceCacheBytes = 256 * 1024 * 1024;
   // Limits for glyph cache textures.
   constexpr size_t kMaxLowEndGlyphCacheTextureBytes = 1024 * 512 * 4;