mac: Don't require DYLD_LIBRARY_PATH to be set when using the shared build.

content/common/sandbox_mac.mm

Index: content/common/sandbox_mac.mm
diff --git a/content/common/sandbox_mac.mm b/content/common/sandbox_mac.mm
index 90b7fe921a0f6a62d4c19a15ce29cb6e80447cbe..42fac8c3721db01e31c34814749ab0134da7dbf6 100644
--- a/content/common/sandbox_mac.mm
+++ b/content/common/sandbox_mac.mm
@@ -271,9 +271,9 @@ void Sandbox::SandboxWarmup(int sandbox_type) {
 
   // Process-type dependent warm-up.
   if (sandbox_type == content::SANDBOX_TYPE_GPU) {
-     // Preload either the desktop GL or the osmesa so, depending on the
-     // --use-gl flag.
-     gfx::GLSurface::InitializeOneOff();
+    // Preload either the desktop GL or the osmesa so, depending on the
+    // --use-gl flag.
+    gfx::GLSurface::InitializeOneOff();
   }
 }
 
@@ -380,10 +380,20 @@ NSString* LoadSandboxTemplate(int sandbox_type) {
     return nil;
   }
 
-  scoped_nsobject<NSString> common_sandbox_prefix_data(
-      [[NSString alloc] initWithBytes:common_sandbox_definition.data()
-                               length:common_sandbox_definition.length()
-                             encoding:NSUTF8StringEncoding]);
+  NSString* common_sandbox_prefix_data =

[Mark Mentovai, 2012/05/30 13:38:22]

I’m leery of taking this out of the scoped_nsobject that it had been in, since I
can’t easily see the autorelease pool that surrounds this, and it might just be
the big early-startup one. 

[Nico, 2012/05/30 15:03:29]

Done.

+      [[[NSString alloc] initWithBytes:common_sandbox_definition.data()
+                                length:common_sandbox_definition.length()
+                              encoding:NSUTF8StringEncoding] autorelease];
+
+#if defined(COMPONENT_BUILD)
+  // dlopen() fails without file-read-metadata access if the executable image
+  // contains LC_RPATH load commands. The components build uses those.
+  // See http://crbug.com/127465
+  if (base::mac::IsOSSnowLeopardOrEarlier()) {
+    common_sandbox_prefix_data = [common_sandbox_prefix_data
+        stringByAppendingString:@"\n(allow file-read-metadata)\n"];
+  }
+#endif
 
   scoped_nsobject<NSString> sandbox_data(
       [[NSString alloc] initWithBytes:sandbox_definition.data()