Move BlimpImageSerializationProcessor and WebPDecoder to //blimp/client

blimp/client/BUILD.gn

Index: blimp/client/BUILD.gn
diff --git a/blimp/client/BUILD.gn b/blimp/client/BUILD.gn
index 1bc9217a2f9963e7910ac67aef8fc19d18bc4efd..19fbdef5c107089d20783e3f82b4b98b73e79793 100644
--- a/blimp/client/BUILD.gn
+++ b/blimp/client/BUILD.gn
@@ -102,6 +102,8 @@ source_set("feature") {
     "feature/compositor/blimp_context_provider.h",
     "feature/compositor/blimp_gpu_memory_buffer_manager.cc",
     "feature/compositor/blimp_gpu_memory_buffer_manager.h",
+    "feature/compositor/blimp_image_decoder.cc",
+    "feature/compositor/blimp_image_decoder.h",
     "feature/compositor/blimp_input_handler_wrapper.cc",
     "feature/compositor/blimp_input_handler_wrapper.h",
     "feature/compositor/blimp_input_manager.cc",
@@ -110,6 +112,8 @@ source_set("feature") {
     "feature/compositor/blimp_layer_tree_settings.h",
     "feature/compositor/blimp_output_surface.cc",
     "feature/compositor/blimp_output_surface.h",
+    "feature/compositor/client_image_serialization_processor.cc",
+    "feature/compositor/client_image_serialization_processor.h",
     "feature/compositor/decoding_image_generator.cc",
     "feature/compositor/decoding_image_generator.h",
     "feature/ime_feature.cc",
@@ -139,6 +143,7 @@ source_set("feature") {
     "//net",
     "//skia",
     "//third_party/WebKit/public:blink_headers",
+    "//third_party/libwebp",
     "//ui/base/ime:text_input_types",
     "//ui/events:gesture_detection",
     "//ui/events/blink",