Warmup text color API for pdf compositor service

Mac sandbox version 1 warms up some system APIs before sandboxing the
process. For pdf compositor service, it needs to use system text color
for lcd text smoothing test. So text color API needs to be warmed up
same as PPAPI process.

We also allow accesses to system color profile for both pdf compositor
service and PPAPI process in Mac sandbox version 2. This allows system
color access, thus prevents bitmap context creation errors caused due to
failed color access.

BUG=822218

Change-Id: I2352588e76e9b8c82d0fa87b3b99b7c897973d6f
Reviewed-on: https://chromium-review.googlesource.com/1014345Reviewed-by: Greg Kerr <kerrnel@chromium.org>
Commit-Queue: Wei Li <weili@chromium.org>
Cr-Commit-Position: refs/heads/master@{#551116}

services/service_manager/sandbox/mac/pdf_compositor.sb

@@ -13,3 +13,8 @@
 
 ; Needed for Fonts.
 (allow-font-access)
+
+; Reads from /System.
+(allow file-read-data
+  ; https://crbug.com/822218
+  (subpath "/System/Library/ColorSync/Profiles"))

services/service_manager/sandbox/mac/ppapi_v2.sb

@@ -24,8 +24,10 @@
 
 ; Reads from /System.
 (allow file-read-data
+  (path "/System/Library/Colors/System.clr/System.clr")
   (subpath "/System/Library/CoreServices/SystemAppearance.bundle")
-  (path "/System/Library/Colors/System.clr/System.clr"))
+  ; https://crbug.com/822218
+  (subpath "/System/Library/ColorSync/Profiles"))
 
 ; Allow the ppapi plugin binaries to be loaded.
 (if (param-defined? ppapi-plugin-0)

services/service_manager/sandbox/mac/sandbox_mac.mm

@@ -165,8 +165,11 @@ void SandboxMac::Warmup(SandboxType sandbox_type) {
     CFTimeZoneCopySystem();
   }
 
-  if (sandbox_type == SANDBOX_TYPE_PPAPI) {
-    // Preload AppKit color spaces used for Flash/ppapi. http://crbug.com/348304
+  if (sandbox_type == SANDBOX_TYPE_PPAPI ||
+      sandbox_type == SANDBOX_TYPE_PDF_COMPOSITOR) {
+    // Preload AppKit color spaces used for ppapi(https://crbug.com/348304),
+    // as well as pdf compositor service likely on version 10.10 or
+    // older(https://crbug.com/822218).
     NSColor* color = [NSColor controlTextColor];
     [color colorUsingColorSpaceName:NSCalibratedRGBColorSpace];
   }