When building with component=shared_library on linux, add -rdynamic

build/common.gypi

Index: build/common.gypi
diff --git a/build/common.gypi b/build/common.gypi
index 05f0f241061a33f7cb067f38c7b832456ab1d941..5635dfa20a33be587aa5823b1086f9a0fc1cb88b 100644
--- a/build/common.gypi
+++ b/build/common.gypi
@@ -3488,19 +3488,17 @@
               }],
             ],
           }],
+          ['component=="shared_library"', {
+            # See crbug.com/112389. Also required for BACKTRACE() to work.
+            # TODO(glider): replace with --dynamic-list or something
+            'ldflags': ['-rdynamic'],
+          }],
           ['linux_use_heapchecker==1', {
             'variables': {'linux_use_tcmalloc%': 1},
             'defines': [
                 'USE_HEAPCHECKER',
                 'MEMORY_TOOL_REPLACES_ALLOCATOR',
             ],
-            'conditions': [
-              ['component=="shared_library"', {
-                # See crbug.com/112389
-                # TODO(glider): replace with --dynamic-list or something
-                'ldflags': ['-rdynamic'],
-              }],
-            ],
           }],
           ['linux_use_tcmalloc==0 and android_use_tcmalloc==0', {
             'defines': ['NO_TCMALLOC'],